The Brandhofer oil mill and sawmill has an oat stamper which is the only one of its kind in the  Swabian Forest and therefore a showpiece of an “old German oil mill equipped with a stamping mortar and wedge press”. In 1830 an oat stamper and an oil mill were added to the existing mill. The  oat stamper was started up by a water-wheel-powered cam shaft. In a roasting pan with a mechanical  stirrer, the pounded grist was heated and then packed into the press. With a stamping pole driven by a  second cam shaft, the pressing wedge was driven into the press thereby squeezing the oil out of the  grist.